Clayton Armstrong 2011-02-22 GSK Aranda SP - steam&condensat

STEAM AND CONDENSATE AUDIT

Project N°30275

Date: 04/02/2011

GSK MANUFACTURING Aranda, Spain

Page 33 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

8 Complete check list of all verifications done during the audit

Potential optimisation

Status

Comments

STEAM GENERATION

Steam pressure setting

OK

7 barg is good compromise. 6 barg would certainly

be too low for distribution (lines sizing restrictions)

Feed water temp. to the boilers

OK

93°C measured on the feedwater pump. Clayton

requires a minimum of 90°C

Stack temperature in front of

NA

Not possible to measure on Clayton boilers.

economizer

Stack temperature after economizer

OK

Refer to combustion analysis or temperatures

reported in the BMS system (when repaired)

Combustion air temperature

To be improved

Ambient

Oxygen rate

OK

5-7% depending on the firing rate

Boiler sizing

OK

Boiler blow down rate

To be improved

Could be reduced to fit with Clayton

recommendations

Refer to optimization project n°1

Deaerator pressure

NA

Atmospheric feedwater tank

Feed-water pre-heating

NA

Boiler stand-by time and volatility of

OK

Clayton steam generators have a good response

steam demand

for these conditions

Boiler blow-down recovery

NA

Blowdown is too low at current steam demand to

recover energy within 5 years payback